package unit_3;

import java.util.Scanner;
public class Demo05 {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        if(a >= 2 && a <= 4)
            System.out.println("春季");
        else if(a >= 5 && a <= 7)
            System.out.println("夏季");
        else if(a >= 8 && a <= 10)
            System.out.println("秋季");
        else
            System.out.println("冬季");
    }
}
